Integration of geospatial data for mapping variation of sediment thickness in the North Sea
: The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM2008 geoid undulations...
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ftdoajarticles:oai:doaj.org/article:78790caac3a34deba996fb483f99c349 2023-05-15T15:16:05+02:00 Integration of geospatial data for mapping variation of sediment thickness in the North Sea LEMENKOVA Polina 2020-08-01T00:00:00Z https://doi.org/10.7427/DDI.25.14 https://doaj.org/article/78790caac3a34deba996fb483f99c349 EN eng CITDD Publishing House http://www.ddniscientificannals.ro/images//25_14.pdf https://doaj.org/toc/1842-614X https://doaj.org/toc/2247-9902 doi:10.7427/DDI.25.14 1842-614X 2247-9902 https://doaj.org/article/78790caac3a34deba996fb483f99c349 Scientific Annals of the Danube Delta Institute, Vol 25, Pp 129-138 (2020) north sea sediment thickness cartography geology gmt Ethnology. Social and cultural anthropology GN301-674 Science Q Science (General) Q1-390 article 2020 ftdoajarticles https://doi.org/10.7427/DDI.25.14 2022-12-31T04:17:13Z : The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM2008 geoid undulations and marine free-air gravity. The data have been processed using GMT. The data analysis revealed variations in the occurrence and distribution of sediment materials as well as its relationship with topography and regional geophysical settings, marine free-air gravity and geoid. Analysis of the topographic map was performed to describe the structural features of the seafloor. Ridges, large-scale sandbanks, shallow coastal areas and local depressions illustrate uneven bathymetry with northward increasing depths. The highest recorded value is 12,779.642 m located in the northern ares in the SW coast of Norway. Moderate values of sediment thickness (5,000-6,000 m) stretching in NW direction clearly correlate with the marine gravity anomaly isolines with values 10-20 mGal which points at the local relief forms in central basin of the North Sea. The subsidence of the outer shelf of the North Sea and increase of sediment thickness is notable in the central depressions and northern areas: Faroe Islands and Rockall Plateau. The sediment thickness shows the relationship with the topography increasing toward high latitudes. It is also associated with the isostatic sink of the submarine relief in the peripheral areas of the Arctic Ocean. Topographic compensation for the seafloor subsidence by increasing sediment thickness explains local dislocations connected with submarine geomorphology. This study also demonstrated that accurate GMT-based cartographic visualization of the oceanic seafloor using high-resolution multi-source raster grids is crucial to better understand spatial distribution of the marine sediments in the northern latitudes of the North Atlantic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Faroe Islands North Atlantic Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Faroe Islands Norway Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) Central Basin ENVELOPE(43.000,43.000,73.500,73.500) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
north sea sediment thickness cartography geology gmt Ethnology. Social and cultural anthropology GN301-674 Science Q Science (General) Q1-390 |
spellingShingle |
north sea sediment thickness cartography geology gmt Ethnology. Social and cultural anthropology GN301-674 Science Q Science (General) Q1-390 LEMENKOVA Polina Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
topic_facet |
north sea sediment thickness cartography geology gmt Ethnology. Social and cultural anthropology GN301-674 Science Q Science (General) Q1-390 |
description |
: The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM2008 geoid undulations and marine free-air gravity. The data have been processed using GMT. The data analysis revealed variations in the occurrence and distribution of sediment materials as well as its relationship with topography and regional geophysical settings, marine free-air gravity and geoid. Analysis of the topographic map was performed to describe the structural features of the seafloor. Ridges, large-scale sandbanks, shallow coastal areas and local depressions illustrate uneven bathymetry with northward increasing depths. The highest recorded value is 12,779.642 m located in the northern ares in the SW coast of Norway. Moderate values of sediment thickness (5,000-6,000 m) stretching in NW direction clearly correlate with the marine gravity anomaly isolines with values 10-20 mGal which points at the local relief forms in central basin of the North Sea. The subsidence of the outer shelf of the North Sea and increase of sediment thickness is notable in the central depressions and northern areas: Faroe Islands and Rockall Plateau. The sediment thickness shows the relationship with the topography increasing toward high latitudes. It is also associated with the isostatic sink of the submarine relief in the peripheral areas of the Arctic Ocean. Topographic compensation for the seafloor subsidence by increasing sediment thickness explains local dislocations connected with submarine geomorphology. This study also demonstrated that accurate GMT-based cartographic visualization of the oceanic seafloor using high-resolution multi-source raster grids is crucial to better understand spatial distribution of the marine sediments in the northern latitudes of the North Atlantic Ocean. |
format |
Article in Journal/Newspaper |
author |
LEMENKOVA Polina |
author_facet |
LEMENKOVA Polina |
author_sort |
LEMENKOVA Polina |
title |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_short |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_full |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_fullStr |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_full_unstemmed |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_sort |
integration of geospatial data for mapping variation of sediment thickness in the north sea |
publisher |
CITDD Publishing House |
publishDate |
2020 |
url |
https://doi.org/10.7427/DDI.25.14 https://doaj.org/article/78790caac3a34deba996fb483f99c349 |
long_lat |
ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(43.000,43.000,73.500,73.500) |
geographic |
Arctic Arctic Ocean Faroe Islands Norway Rockall Plateau Central Basin |
geographic_facet |
Arctic Arctic Ocean Faroe Islands Norway Rockall Plateau Central Basin |
genre |
Arctic Arctic Ocean Faroe Islands North Atlantic |
genre_facet |
Arctic Arctic Ocean Faroe Islands North Atlantic |
op_source |
Scientific Annals of the Danube Delta Institute, Vol 25, Pp 129-138 (2020) |
op_relation |
http://www.ddniscientificannals.ro/images//25_14.pdf https://doaj.org/toc/1842-614X https://doaj.org/toc/2247-9902 doi:10.7427/DDI.25.14 1842-614X 2247-9902 https://doaj.org/article/78790caac3a34deba996fb483f99c349 |
op_doi |
https://doi.org/10.7427/DDI.25.14 |
_version_ |
1766346395825995776 |